Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Financial Select Sector SPDR Fund
XLF
|
+$42.3M |
| 2 |
Shopify
SHOP
|
+$37.4M |
| 3 |
Verizon
VZ
|
+$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Merck
MRK
|
+$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
+$38.3M |
| 2 |
Carnival Corp
CCL
|
+$37.6M |
| 3 |
GE Aerospace
GE
|
+$33M |
| 4 |
Advanced Micro Devices
AMD
|
+$30.6M |
| 5 |
Micron Technology
MU
|
+$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
TPGY
701
DELISTED
TPG Pace Beneficial Finance Corp.
TPGY
| $621K | ﹤0.01% |
63,330
-86,861
| -58% | -$852K |
|
|
AMRN
702
Amarin Corp
AMRN
$310M
| $620K | ﹤0.01% |
9,204
+6,263
| +213% | +$422K |
|
|
CMPS
703
Compass Pathways
CMPS
$485M
| $620K | ﹤0.01% |
28,071
+15,314
| +120% | +$338K |
|
|
DISH
704
DELISTED
DISH Network Corp.
DISH
| $619K | ﹤0.01% |
+19,084
| New | +$619K |
|
705
Hartford Financial Services
HIG
$36.9B
| $617K | ﹤0.01% |
8,941
-23,848
| -73% | -$1.65M |
|
|
IMGN
706
DELISTED
Immunogen Inc
IMGN
| $616K | ﹤0.01% |
83,063
+61,163
| +279% | +$454K |
|
707
Alaska Air
ALK
$7.22B
| $615K | ﹤0.01% |
11,815
+3,614
| +44% | +$188K |
|
708
Wyndham Hotels & Resorts
WH
$6.43B
| $614K | ﹤0.01% |
+6,852
| New | +$614K |
|
709
Schneider National
SNDR
$4.18B
| $613K | ﹤0.01% |
22,796
+16,701
| +274% | +$449K |
|
710
Bruker
BRKR
$4.63B
| $609K | ﹤0.01% |
+7,262
| New | +$609K |
|
711
ProShares Ultra Bloomberg Natural Gas
BOIL
$128M
| $603K | ﹤0.01% |
231
-112
| -33% | -$292K |
|
712
ARK Space Exploration & Innovation ETF
ARKX
$397M
| $601K | ﹤0.01% |
31,926
+12,656
| +66% | +$238K |
|
713
Global X Social Media ETF
SOCL
$153M
| $601K | ﹤0.01% |
11,169
-6,057
| -35% | -$326K |
|
714
ProShares Ultra NASDAQ Biotechnology
BIB
$55.3M
| $596K | ﹤0.01% |
+7,352
| New | +$596K |
|
715
Exelixis
EXEL
$10.1B
| $594K | ﹤0.01% |
32,522
+6,182
| +23% | +$113K |
|
716
ICL Group
ICL
$8.07B
| $594K | ﹤0.01% |
+61,447
| New | +$594K |
|
717
Invesco CurrencyShares British Pound Sterling Trust
FXB
$91M
| $593K | ﹤0.01% |
+4,565
| New | +$593K |
|
718
SL Green Realty
SLG
$4.29B
| $591K | ﹤0.01% |
8,002
+4,441
| +125% | +$328K |
|
719
Hudbay
HBM
$5.33B
| $590K | ﹤0.01% |
81,436
+42,600
| +110% | +$309K |
|
720
Global X US Infrastructure Development ETF
PAVE
$9.36B
| $590K | ﹤0.01% |
20,521
-12,205
| -37% | -$351K |
|
721
Radiant Logistics
RLGT
$301M
| $590K | ﹤0.01% |
+81,052
| New | +$590K |
|
722
Safe Bulkers
SB
$458M
| $589K | ﹤0.01% |
156,253
-9,908
| -6% | -$37.3K |
|
723
Sony
SONY
$171B
| $589K | ﹤0.01% |
23,315
-44,830
| -66% | -$1.13M |
|
|
CHNG
724
DELISTED
Change Healthcare Inc. Common Stock
CHNG
| $588K | ﹤0.01% |
27,546
-9,019
| -25% | -$193K |
|
725
United States Brent Oil Fund
BNO
$103M
| $586K | ﹤0.01% |
28,040
-6,895
| -20% | -$144K |
|